[MM-61769] Fix errcheck for /platform/searchengine.go (#29341)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

server/.golangci.yml

@@ -99,7 +99,6 @@ issues:
         channels/app/permissions_test.go|\
         channels/app/platform/helper_test.go|\
         channels/app/platform/license.go|\
-        channels/app/platform/searchengine.go|\
         channels/app/platform/service.go|\
         channels/app/platform/service_test.go|\
         channels/app/platform/session.go|\